bass accesory

HI. I am a beginner, and I have a warwick rockbass corvette and a warwick blue cab 30. A friend of mine will order today from Thomann, and I have about 50 euros to spend on something. I don't have a tuner and a metronome, and I would like to buy one tuner because rarely I find it difficult to fine tune my bass or use lower tuning. So what would you recommend, buing a tuner-metrinome, or saving some money in order to buy some kind of effect pedal?

This will cost 37,80 euros, instead of the combo which would cost about 25 or 29 euros and would be more practical because of the 2-in-1 design. So I guess that I will choose one from these two. Which one is better?